Elective Tracheal Intubation With the VieScope—A Prospective Randomized Non-inferiority Pilot Study (VieScOP-Trial)

Abstract

BackgroundTracheal intubation is commonly performed after direct laryngoscopy using Macintosh laryngoscopes (MacL), but visualization of the larynx may be inadequate. The VieScope (VSC) as a new type of laryngoscope consisting of a straight, shielded, illuminated tube used to perform intubation via a bougie was investigated in this prospective randomized trial in patients without expected difficult airways.MethodsWith ethics approval, 2 × 29 patients for elective surgery were randomized 1:1 to intubation with VSC or MacL. Endpoints were first attempt success rates (FAS), Percentage of Glottis Opening Scale (POGO), time to intubation (TTI), and difficulty ratings on visual analog scales (0–100, lower values better). Data are given as mean ± standard deviation.ResultsThe FAS was 83 ± 38% for VSC and 86 ± 34% for MacL (P = 0.723). For VSC, POGO was 86 ± 17% and for MacL 68 ± 30% (P = 0.007). TTI for VSC was 93 ± 67s vs. 38 ± 17 for MacL (P < 0.001). Difficulty of intubation was rated 23 ± 22 for VSC vs. 18 ± 22 for MacL (P = 0.422), viewing conditions 12 ± 15 vs. 24 ± 25 (P = 0.031), and difficulty of tube placement was rated 27 ± 30 vs. 7 ± 8 (P = 0.001).ConclusionNo difference in FAS was detected between VSC and MacL. Visualization of the larynx was superior using the VSC, while TTI was prolonged and tube placement via bougie was more challenging. The VSC could be an alternative to MacL in patients with difficult laryngoscopy, but this should be investigated further in patients with expected difficult airways.

A Prospective Comparative Study of Laryngeal Glottic View Using the Vie Scope® versus Standard Macintosh Laryngoscope in Morbidly Obese Patients

“…One randomized trial compared Vie Scope ® with Macintosh laryngoscope for tracheal intubation in elective surgical patients. 14 The authors concluded that the VS significantly improved the view of the vocal cords, however, total intubation time was longer and tracheal tube placement over the bougie was more difficult than direct tracheal intubation using the Macintosh laryngoscope.…”

A Comparison of the bébé VieScope™ and Direct Laryngoscope for Use While Wearing PPE-AGP: A Randomized Crossover Simulation Trial

“…Petzoldt et al published a study on elective endotracheal intubation using VieScope and Macintosh laryngoscope in adult patients [ 17 ]. They measured first-attempt success rates, percentage of glottis opening scale, time to intubation, and difficulty ratings on visual analogue scales.…”